Ross Cairns rc1

This is a proposal for a lightning talk at the Reactive 2016 conference.

NOTE: If you like this, star ⭐ the Gist - the amount of stars decides whether it makes the cut! You could also Retweet if you want :)

Get Flow

Type checking JavaScript with Flow

JavaScript is a dynamic language, and there's nothing wrong with that. It allows quick iteration and lowers barriers. However, sometimes some compile-time type checking is just what you need to keep your code in line and give yourself the confidence to build bigger and faster. Flow gives the best of both worlds. You can have normal JavaScript but you can also add types where they're helpful, and it adds zero cost at runtime. In this talk I'll show Flow as it applies to a Redux & React codebase.

Connect to computer via USB
Backup via iTunes (make sure you choose encrypted backup)
Transfer purchases via iTunes
Ensure iCloud backup for Docs and Data is on for the apps that need their data restored
Force-trigger an iCloud backup (fromthe Settings, on Wi-Fi and connected to power)
Erase all content and Settings on iOS
Connect to iTunes and use Restore from Backup

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

The Problem

Standard practices say no non-root process gets to talk to the Internet on a port less than 1024. How, then, could I get Node talking on port 80 on EC2? (I wanted it to go as fast as possible and use the smallest possible share of my teeny tiny little micro-instance's resources, so proxying through nginx or Apache seemed suboptimal.)

The temptingly easy but ultimately wrong solution:

Alter the port the script talks to from 8000 to 80:

}).listen(80);

	/// <summary>
	/// Computes the intersection points between a frustum and an infinite line.
	/// Finds the visible part of a segment in respect of a camera frustum.
	/// Returns false if the line is not visible at all.
	/// </summary>
	/// <example>
	/// var planes = GeometryUtility.CalculateFrustumPlanes(camera);
	/// if (GetFrustumLineIntersection(camera, planes, ray, out d1, out d2)) {
	/// Gizmos.DrawLine(ray.GetPoint(d1), ray.GetPoint(d2));
	/// }

	using System;

	namespace UniRx {

	public static class SwitchExtensions {

	public static IObservable<OUT> SwitchSelectWhenTrue<OUT>( this IObservable<bool> observable, Func<IObservable<OUT>> resultIfTrue ) {
	return observable.Select(value => value == true ? resultIfTrue() : Observable.Empty<OUT>()).Switch();
	}

	#!/bin/bash

	# This lives in your project directory, alongside src/, bin/, config.make, etc

	DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
	cd $DIR
	make Debug && make RunDebug;

	<!DOCTYPE html>
	<html>
	<head>
	<title>title</title>
	</head>
	<body>
	<p>body</p>
	</body>
	</html>

	.ie_rgba(@hex, @alpha:256){
	@newhex: `"#" + (Math.round("@{alpha}" * 256)).toString(16) + "@{hex}"`;

	background: transparent;
	-ms-filter: ~'"progid:DXImageTransform.Microsoft.gradient(startColorstr=@{newhex},endColorstr=@{newhex})"'; /* IE8 */
	filter: ~'progid:DXImageTransform.Microsoft.gradient(startColorstr=@{newhex},endColorstr=@{newhex})'; /* IE6 & 7 */
	zoom: 1;
	}

	{
	"cmd": [ "Plask", "${file}" ],
	"selector": "source.js",
	"path": "< path to >/Plask.app/Contents/MacOS/",
	"working_dir": "${file_path}"
	}